Eight-year follow-up of bimaxillary transverse distraction osteogenesis

The purpose of this case report was to describe the treatment, including 8-year follow-up records, of a patient with severe crowding due to narrow maxillary and mandibular apical bases. The treatment included bimaxillary transverse distraction osteogenesis to increase both the maxillary and mandibular arch perimeters simultaneously by increasing skeletal width. The advantages of distraction osteogenesis are discussed. The successful outcome depended on the collaboration between the orthodontist and the surgeon. Long-term stability illustrated improvement in occlusion, dental alignment, and facial morphology, without extraction of teeth.